sample code
let modelConfiguration = ModelConfiguration()
// 1. create mom
guard let mom = NSManagedObjectModel.makeManagedObjectModel(for: [Attachment.self]) else {
fatalError("====> makeManagedObjectModel error")
}
// 2. create description with config url and setting
let description = NSPersistentStoreDescription(url: modelConfiguration.url);
description.shouldAddStoreAsynchronously = false;
container = NSPersistentCloudKitContainer(name: "swiftDataCloudTest", managedObjectModel: mom);
container.persistentStoreDescriptions = [description]
// 3. get modelContainer
let modelContainer = try! ModelContainer(for: Attachment.self, configurations: self.modelConfiguration)
this code works fine on MacOS(14.4.1) and previous iOS 17.x.（iOS 17.2 is OK）
but on iOS 17.5, the app crashes with message
A Core Data error occurred." UserInfo={NSLocalizedFailureReason=Unable to find a configuration named 'default' in the specified managed object model
how can I fix these?
chijun89
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
Last seen
User for
Post
Replies
Boosts
Views
Activity
My app uses SwiftData and CloudKit to store and synchronize data. This works nice. in some scenarios, I need to listen to NSPersistentStoreRemoteChange event to deduplicate data.
In SwiftData, how do I get the persistentStoreCoordinator of the corresponding SwiftData ModelContainer? Or are there other APIs to achieve the same purpose? There is no relevant content in the developer documentation.
In addition, in wwdc 24, there is a new API to track history (https://developer.apple.com/cn/videos/play/wwdc2024/10075/). But there is no mention of how to listen to remote data change events either.
code
import SwiftUI
@main
struct swiftuiTestApp: App {
@State private var value = "a";
var body: some Scene {
WindowGroup {
Menu("menu") {
Picker("", selection: $value) {
Text("A").tag("a")
Text("B").tag("b")
Text("C").tag("c")
}
.pickerStyle(.inline)
.onChange(of: value) { oldValue, newValue in
print("onChange", newValue)
}
}
}
}
}
on MacOS, onChange is not triggered when an option is selected for the first time, but subsequent option selections are triggered。
on MacOS, when Picker is not inside Menu, it works fine
on iOS, both works fine with inside or not inside menu
struct ContentView: View {
@State private var editTitle = "title"
@FocusState private var isFocused: Bool
var body: some View {
NavigationSplitView {
Text("sidebar")
} detail: {
Text("detail")
.navigationTitle("")
.toolbar {
ToolbarItem(placement: .principal) {
TextField("", text: $editTitle)
.focused($isFocused)
.onChange(of: isFocused) { oldValue, newValue in
print("onChange")
}
}
}
}
}
}
on iOS, onChange is triggerred when TextField is inside toolbar or not
on MacOS, onChange is not triggerred when TextField is inside toolbar, but when not in toolbar, it works fine